A RAID-0 or striped volume is used to combine unallocated space on multiple physical disks. As with spanned volumes, unallocated space on up to 32 physical disks can be combined to create a single striped volume. Unlike spanned volumes, the amount of space allocated to the volume on each disk must be identical, and data is written to all the physical disks in the volume at the same rate (also known as striping). Writing data to multiple disks increases write performance significantly. It also allows data to be read from multiple disks, which significantly improves read performance.
Although striped volumes offer improved read/write performance over spanned volumes, striped volumes provide no fault tolerance. If one of the disks of which the striped volume consists fails, then the entire volume fails and data must be recovered from backup. It should also be noted that you cannot extend striped volumes, nor can you stripe the system volume.